Quicly attachable implement



Sept. 11, 1951 W. H. slLvl-:R ETAL 2,567,736

QUICKLY ATTACHABLE IMPLEMENT Filed Feb. 16, 1945 5 Sheets-Sheet 1 47 555% 9 www um. a;

FIG. I

INVENTORJS` WALTER I-l SLVER WILLIAM V. LOHRMAN 1951 W. H. SILVER ET AL QUICKLY ATTACHABLE IMPLEMENT Sept. 1.1

3 Sheets-Shee Filed Feb. 16, 1945 INVENTOR H. SIU/Eg l WALTER WILLIAM V. LOHRMAN S S E N H W Sept l1, 1951 W. H. SILVER ET Al. 2,567,736

QUICKLY ATTACHABLE IMPLEMENT Filed Feb. 16, 1945 5 Sheets-Sheet 5 ,OO\ FIG. 4

INVENTOR. WALTER H. SILVER WILLIAM V. LOHRMAN AT ORNEYS Patented Sept. 11,1951

UNITED `smrlzs PATENT OFFICE QUICKLY. IMPLEMNT t' Lohrman, Davenport, Iowa, assignors to Deere & Company, Moline, Ill., a corporation of Illinois" Application February-'16, 1945, serial No. 578,143

8 Claims.

1` The ypresent invention relates generally to agricultural" machines' and more particularly to inte- 'gral or tractor mounted implements.

{The object and general nature of the present inventionis the provision of a new'and improved integral implement which may easily and quickly vbe attached to or vdetached/ from its supporting tractor and'in which the implement may be readily attached tothe tractor by' 'backing the trlactor imposition, lowering the tractor drawbar v-slightlyg'and then driving forwardly.

More particularly, it is a feature `of this inven-l tienta-provide new and improved depth adjusting? means for adjusting the depth of operation .ef-the tools byraising or. lowering the front and Arear ends ofthe tool. beams substantially the same amount. Ar'iotherv feature o ffth'is invention is `a. provision of quick detachable means for connecting the depth adjusting means with the tractor; 1F-These and other objectsandA advantages of the present invention will be .apparentto those skilled iii-the art after'a consideration -of the following detailed description, taken in conjunction with accompanying drawings in which the preerted forms ofthe present invention have been illustratedj s l n the drawings: Figure l `isa sideview of av quick detachable impleurent;suchv as a two bottom lister, showing the sai-ne as mounted in position on its propelling and supporting tractor. 1 Figure 2 lis a plan view of'theimplement shown inFig'ure l, the tractor being indicated in dotted lines in order to show the vimplement parts more clearly.` fFigure 3 is a sectional view .taken generally aIOngthe line l3'-3 of Figure 2.

Figures 4 and-5 are plan and vside views, respectively, of a two bottom plow incorporating the provisionsy of the present invention.' Referring Anow to the drawings, particularly Figures lfand 2,L thereferenoe numeral I indicate's a farm tractor of the four wheel type, havlng front and rear wheels 2 and 3 fjournaled for rotationonaxle means Sand 6. lThe tractor'include-s, ei power plantl `and a power lift u nit 8 of the hydraulic type, including suitable valve mechanisxn' V* andfother' necessary parts, such as a pair' of lift Iarms and links |2 connecting the arms A'|| to lugs] I3 formed on the side members |4; '`of a generally vertically swingable tractor drawbar or bal'member |5. The la'tter is preferablyi'nthe vform of a Ushaped member, considered as awhole,A and includes a rear transverse ysection I6 which may be'formed of round stock.

The sides |4 may be strap members, and the latter are pivoted at their front ends, as at I'I, to drop housings I8 which form a part of the tractor rear axle structure 6. Preferably, therear part I6 is welded or otherwise permanently secured to the side parts I4 of the tractor drawbar or bail l5. The two power lift arms I I are clamped orA otherwise iixed in any suitable manner to the ends of a power lift rockshaft 2U which forms apart of the hydraulic unit 8. As best shownin Figure 2, a lug 24 is welded or otherwise permanently fixed to the central section |6 of the tractor drawbar |5 and is apertured, as at 25, to receive certain types of implements, such as the two bottom plow` shown in Figures 4 and 5. The two bottom lister shown in Figuresl and 2 is not attached to the lug 24.

As best shown in Figures 1 and 2, one of the implements that may readily and quickly be attached to and detached from the tractor is. a two bottom lister, indicated in its entirety by the reference numeral 30. The implement includes a toolbar 3| extending transversely and at its ends receives standards from lister bottoms 32 rmly and rigidly secured to the tool bar 3| by clampingmeans 33 and associated parts. As best shown in Figure 1, each clamping unit includes a pair vof brackets 35 fixed as by welding or the like to the forward end of a tool standard 36 the lower end of which is pivoted, as at 3l, to a pair of upstanding vertical brackets 3 8 to which the lister bottom 32 is xed in any suitable manner. The upper ends of the brackets 38 are apertured to receive a trunnion member 39, the 4latter member receives the rear lend of a threaded 'ad-'- justing rod 4| which is pivoted, as at 42, tothe bracket plates 35. Lock nuts 43 nx the trunnion member 39 in different positions of adjustment along the threaded rod 4|, whereby the suck of the bottom may be adjusted. v

Each trunnion 39 is mounted in suitable brackets 45 for movement relative to the latter about. vertical pivots 46, and the brackets are pivoted to the upper ends of the vertical brackets 38 by horizontal pivots 41. The brackets 35 are clamped to the ends of the'tool bar 3| by caps48 and clamping bolts 49.

An attaching member'in the form of a forward- 1y extending bracket 5| is rigidly secured, as by welding, to each end4 portion of the tool bar 3|, as best shown in Figure 2. Each of these brackets is reinforced by a Vertical piece 52 welded to the bracket and at its rear end to the forward side of the tool bar 3|. The upper edge of each of the pieces 52 slopes downwardly and forwardly, as

best shown in Figure 1. Forward of each piece 52 the associated bracket 5I is formed with a rearwardly facing hook portion 56, preferably made by bending the stock of which the bracket 5I is formed over upon itself to form a rearwardly facing socket S and with the end portion of the bent over section flaring upwardly and rearwardly. as indicated at 51. The upper and lower prtions of each of the hook sections 56 are apertured to receive a locking pin 6I which serves to hold the rear cross bar I6 of the tractor drawbar I5 in position seated in the hooks 56. Assuming that the implement is resting on the ground, it may readily be attached to the tractor merely by backing the tractor'into the implement with the drawbar I raisedfslightly above the position shown in Figure l, and then after the cross bar I6 is in a position slightly to the rear of the open end of the hooks 56, the drawbar is then dropped and the tractor driven forwardly. The upper edges of the. reinforcing braces 52 serve to guide the cross bar `,I6 into the open ends of the hook portions, it being assumed that the pins 6I were withdrawn previously. After the tractor has been driven forwardly a few inches, the cross bar I6 seats inthe hook portions 56, as shown in Figure 1 and then the locking pins 6| are dropped in place behind the cross bar I6, thus locking the implement to the tractor.

g A` depth adjusting and stabilizing structure is associated with the tools 32 fory holding them in theV proper position for different depths of operation, it being understood that the drawbar I5 rn'ay be raised into different positions by proper actuation of the valve V. However, the drawbar I5 is free to be moved vertically beyond its position of adjustment and to return to that position but noty below it. The depth adjusting and stabilizing structure will now be described.

Av longitudinal beam or stabilizing bar 1| is bent upwardly," as at 12, at its rear end and is apertured to receive a pair of bolts 13 which serve to'ixthebar 1I to the tool bar 3| through a pair of brackets 14 that are welded to the tool bar 3| and' extend forwardly thereof in laterally spaced -relation so as to receive the rear end of the `stabilizingV bar 1I therebetween. The bar 1I extendsforwardly underneath the rear axle 6 of the tractor and at its forward end rests in a vertically shiftable depth adjusting bail member 15, theupper ends of which, as best shown in Figure-3, are apertured to receive a cross bar 16 that is carried in the rear lower ends of a pair of arms 11 and 18 which at 'their upper or forward portions-are Awelded or Votherwise suitably fixed to a cross shaft 19. The latter is supported in suitable bearing brackets 8| and 82 and at one end has an arm 83 fixed thereto and connected by a link 84 to an arm 85 formed on the right side member I4 of the tractor drawbar bail I5. Connection between the front end of the link 84 and the arm 83 is effected by -means of a clamping swivel 86, and a similar clamping swivel 81 serves to connect the rear end of the link 84 with the upper end of the arm 85. The cross shaft 16 is held in the desired lateral position with respect to the bearing brackets 8| and 82 by clamp vcollars 89. The two bearing pla-tes 8| and 82 are adapted to be readily and quickly attachable to and detachable from the tractor I, preferably the intermediate portion thereof forward of the rear axle `6. To this end, the tractor carries a pair of attaching plates 92, bolted to the tractor, as at 93 and S4. Each of the attaching plates 92 is provided with a forwardly facing notch 95 (shown in 4 dotted lines in Figure 1) which is adapted to receive the cross shaft 19, the upper and lower edges of the'notch 95 flaring downwardly and forwardly to facilitate movement of the shaft 19 and associated .parts into position. Also, each of the bearing brackets 8| and 82 is provided with a rearwardly facing notch 91 which isadapted to receive a stud 98 carried by the associated tractor attaching bracket 92, each stud 98 receiving a wing nut 99.`

The operation of the above described embodiment of this invention is substantially as follows.

Figure 1 shows the parts in operating position, and it will be noted that as the outfit moves forwardly, the pressure of the soil against the lifter bottoms 32 tends to cause the tool unit, which includes the bottoms 32, the stabilizing bar or longitudinal beam 1I and associated parts, to tend to swing about the axis defined by the rear cross bar member I6 on the tractor bail or drawbar I5. Thismovement is, however, restrained by the engagement of the front end of the bar 1I in the depth adjusting or vertically swingable bail 15. The position of the latter depends upon the position of the tractor drawbaror bail I5, since they are linked together by the links 84 and associated parts, as best shown in Figure 1. If it should be desired to cause the listerbottoms 32 to operate 'at increased depth, the valve mechanism V is operated so as to permit the bail I5 to lower the desired amount. The lowering of the bail I5 exerts a pull on the links 84 which, in turn, serves to lower the front or depth adjusting bail 15, and the connections are so arranged that the bail 15 lis lowered, or raised, substantially the same as the cross bar I6 of the tractor drawbar I5, whereby the position of the tool is changed as desired but the tool is moved into different parallel positions relative to the tracton Itf will be noted that the front end portion of each lister bottom is disposed substantially underneath the cross bar I6 of the draft bail. This arrangement has the advantage that the downward thrust or pressure of the soil against theV tools 32 does not cause the front end of the longitudinal bar 1I to tip up, whereas the bar I6 being a considerable distance above the tools 32 the rearward pressure of the soil against the tools serves to hold the front end of the longitudinal stabilizing bar 1I down against its supporting bail 15.V

When it is desired to lift the tool. into a transport position the valve V is operated to cause the power lift arms II to be swung upwardly. 'Since the greater weight of the tools lies rearwardly of the bar I6, the first effect of the liftingaction is to raise the front end of the stabilizing bar 1I upwardly until it contacts the' upper pivot bar 16 (see dotted line position of the bar 1I in .Figure 3) After this contact is established the further upward movement of the lifting arms II serves to raise the entire implement, but the upward movement of the front end of bar 1I has the advantage that in the first part of the lifting action the lister bottoms 32 are tipped upwardly so as to aid and accelerate their running out of the ground. When rst lowering the tools into the ground to start operation, the front end of the bar 1I vremains in contact with the bar 16 until the rearward pressure of the soil against the lower portions of the tools 32 serves to swing the bar 1I downagainst the bail 15 in its normal position. The brackets 14, connecting the rear end of the bar 1| with its tool bar 3|, are pro'-` vided with a number of apertures so that the bar 1| may be xed to the toolbar in diierent relativepositions; andlikewise the upper ends of the h'ster bottom brackets 38 may be adjusted longitudinally of. the screw threaded rod or bolt 4| associated therewith.

The present invention is not necessarily limited to a tool bar implement or to .a'two bottom. lister or the like. We have shown in Figures 4'and15 4a: two bottom moldboard plow especially constructed and arranged to lbe mounted on the trac- .tor4 and to be associatedv with the tractory draw'- bar` I5 and the depth adjusting bail 15 and'asd sociated. parts in much. the same. manner as .the .two bottom listers shown in Figures 1 .and Referring now to Figures/4 and. 5,;a .two bottom plow of the quick attachable type is indicated in its entirety by the reference numeral |100 and comprises plow beam. members |'0|,. |02. and |03.. suitably connected together to form a plow frame |104.. The frame |04 alsovincludes suitable braces |05, |06 and |01. Securedto the rear end'of each of the. plow beams V|0| and |02 is av downwardly and forwardly extendingv standard |09 to which a. moldboardplow bottom ||0 isfattached in. any suitable way. A bracket structure 38v serves to ii-x each standard |00 to the associated plow beam. The two left hand plow beam members l0 and |02 are formed to converge forwardly, as best shown in Figure 4, and. their forward converged ends are apertured to receive a pivot pin which. extends through a pair of lugs ||2 welded or otherwise secured to a'saddle member |.|.3. The latter member is formed preferablyl of ilat stock. bent over onto itself in generally U-shaped configuration, as best.l shown in Figurea5,. and r.

the.r stock. is trimmed so as to form` a generally triangular structure, as shownl inl-Figure 4. The forward apex section of. the saddle memberv ||3 4is apertured to receive.a..detachable hitch pin H6, the hitch pin including a lowerend. section .||1 adapted to pass downwardly through the openings inl the saddle. mem-berv .I |3Y and the openingV 25 (Figure 2) in. the bracket member24 that is secured to the tractor drawbar member'l.

A spring clip IIB serves to retain the hitch. pin

IB in position. A secondv pair of. rearwardly ex; tending lugs I.2| is xed to the rear side of the saddle member ||3 and, receivesv a. pivot pin |i2-2 that passes throughan apertured ear |23 formed on and extending forwardly of a vertically ad.- justable. lug |24. Thelatter member is. inter-.- nally threaded tov receive a. leveling screw |25 which: is rotated; by a. handle |26 and 'is held for rotation ina vertical. U-shaped` bracket'l21. The bracket |21 is fixed t0 the forward end-'of the right hand plow beam member |03, as. best shown in Figure 4. A lateral-ly inwardlyr extend-ing bracketk |3| is also xed to the front. endof the right hand plow beam memberl |03 and receives a pivot |42 that extends. in a transverse. direction .throughan opening in the rear upturned end |36 of a longitudinally extending bar orfstabilizing member |31. The front end of the stabilizingy bar |31 is formed like the bar 1| shown in Fig.- ures l and. Zand is adapted to becarried in the depth adjusting bail on the tractor. The rear upturned endY |36` of the stabilizing member V|31 isV apertured tor receivea pair of bolts |4| which secure to the bar |31 a pair of spaced brackets |43Y which are apertured to receive the trunnions |44 of a sleeve. memberV |45. The forward threaded end` of an adjusting strutY |46 vpasses through the sleeve |45. and receives a pair. of. lock nuts; |411 thereon. The rear end of the strut or link; |546; receives a. pair of pivot clamps |5.;|:

which are connected. by a pivot pin |52 to a pair of generally outward-lysoffset upwardly extending bracket plates |53, the lower portions of which are secured by the samebolts |54 that fasten the two plow beam. members |02, |03 and the brace |05 together.

The two bottom plow shown in Figures 4 and 5 is` attached to and detached from the tractor in substantially the same way as described above in connection with the two bottom lister shown in. Figures 1 and 2, except that the saddle mem-y ber ||3 formsV a .forwardly facing socket s in.- stead Aof a rearwardly facing socket, as provided by the rearwardly facing hook portions 56. Therefore, when attaching Lthe plow shown in Figures 4 and 5, the tractor is backed with the drawbar I0 disposed in afposition to enter between the upper and lower portions of the saddle member. H3, after which the hitch lpin |6 may thenbe*` placed in the apertured portions of the saddle memberll and the forward apertured lug 24 of the tractor drawbar. The relative angular position of. the stabilizing member |31 relative to the plow frame may be adjusted by loosening one of the lock nuts |41and tightening the other, thereby shifting the sleeve |45 along the strut |45 in one direction or the other and thus pivoting the plow frame about its pivotal connection with the longitudinal stabilizing bar |31. The plow may be leveled by turning the adjusting screw |25 (Figure 5) in one direction or the other.

'The operation of' the two bottom plow shown in Figures 4 and 5 is substantially the same as the operation of the two bottom lister described above in detail. It is to be noted, however, that where no leveling isA necessary for the two bottom lister, leveling is provided for by the construction of thetwo bottom plow shown in Figures 4 and 5. The operation of both implements is such that uniform depth of operation is normally maintained even though the tractor may pass over uneven ground. For example, will be remembered that the tractor drawbar I5 and its connections are so arranged that the drawbar |5 in any position of adjustment may move momentarily upwardly out of that posilion and then downwardly back to that particular position without material restraint. Thus, in case the front wheels 2 of the tractor pass over a, ridge or the like the upward tilting. of the. front end of the tractor does not force the tools. down into the ground. beyond normal depth because under the conditions just assumed the tractor drawbar |5 momentarily rises with respect to the rear end of the tractor. Likewise, if the front wheels 2 of. the tractor should drop into a hole or the. like, theV rear drawbar. t5 of course, pulled upwardly, since it cannot move downwardly with respect to the tractor, but this does not. pull. the tools out of the ground to any ap# preciablev` extent since the front endV of the stablizing bar 1| merely rises momentarily to the upper cross bar 1E (dotted lines Figure 3). This action, althoughV momentary, minimizes the variation in the depth of operation of the tools in the event the' front wheels of the tractor drop into a` depression.l

While we have shown and described above the preferred structure in which the principles of the present invention have been incorporated, it is to lie-understood that our invention is not to bezlimitedto thel particular details shown and described above, vbut that, in fact, widely dif-l ferent means may be employed in the practice of the broader aspects of our invention.

What we claim, therefore, and desire to secure by Letters Patent is:

1. In a tractor mounted implement adapted. to be mounted on a tractor having a vertically swingable bail, a vertically swingable drawbar rearwardly of said bail, means on the tractor for swinging the bail and drawbar, said implement comprising a generally longitudinal beam extending generally forwardly relative to the tractor and carrying a ground working tool at its rear end, a transverse part on the rear portion of said beam, socket means on said transverse part for detachably receiving the rear p0rtion of said drawbar and adapted to be rais-ed and lowered -by raising and lowering said drawbar, the forward portion of said beam resting in said bail and freely withdrawable therefrom by longitudinal movement of the bail relative to the front end of said beam, and said socket means being open at one side facing in a fore and aft direction whereby said socket means is releasable from said tractor drawbar by longitudinal movement of the drawbar relative to the beam.

2. In an agricultural implement adapted to be attached to a tractor having a vertically swingable drawbar, a vertically shiftable partreceiving member carried Iby the tractor forward of said drawbar, and means on the tractor for swinging said member and drawbar, said agricultural machine including a ground working tool, socket means carried by said tool and adapted to receive the rear portion of said drawbar and to be raised and lowered by raising and lowering of said drawbar, said socket member being open at one portion so as to be freely removable from or connectible to the rear portion of said bail, said tool including a part eX- tending generally forwardly underneath the tractor and rigidly connected with said tool, and the forward end of said part being adapted to rest in said part-receiving member and disconnectible therefrom merely Aby withdrawing said forward end therefrom 3. An implement adapted to be connected with a tractor having a vertically swingable generally U-shaped bail member, said implement being adapted to be connected to the bail member of said tractor and including a pair of forwardly extending hook portions, each having vertically spaced sections joined forwardly and spaced apart rearwardly with the lower section connected with said implement so that said tractor may be backed into the implement and the rear portion of said bail member lowered into a position rearwardly of the open ends of said hook portions, into substantial contact with the lower connecting secions thereof, and then driven forwardly to engage the tractor bail in said hook portions.

4. An agricultural implement for use with a tractor having a generally vertically swingable bail pivoted to he rear portion of the tractor and a depth control uni';A mounted forward of said bail, said implement comprising a transverse tool bar, tools xed thereto, a pair of forwardly extending hook members fixed at their ends to said tool bar and carrying hook-like sections the open ends of which face rearwardly but positioned forwardly of said tool bar, said bail on the trac or being adapted to be engaged in between said hook sections by first backing the tractor, then lowering the bail into substantial engagement with said forwardly extending hook members and then driving the tractor forwardly to bring the tractor bail into seating relation between said hook-like sections, and a member rigidly connected at its rear end to said tool bar, the forward end of said last mentioned member being received by said depth control unit whereby operation of the latter controls the position of said tools.

5. A two row lister adapted to be mounted on a tractor having a rear vertically swingable drawbar bail and a forwardly disposed bar-receiving member swingably mounted on the tractor for generally vertical movement and interconnected with said bail, said two row lister comprising frame means including a generally forwardly extending bar adapted to be removably seated in said vertically movable tractor-carried member and a transverse bar rigidly fixed to the rear end of said forwardly extending bar, a pair of lister bottoms fixed to the end portions of said transverse bar, and means for detachably connecting said transverse bar with the rear tracLor drawbar including a pair of laterally spaced sockets connected with said transverse bar and open at one side so as to receive the transverse portion of said rear tractor drawbar, said implement being detached from the traclor by moving the samelongitudinally so as to disengage the transverse portion of said swingable bail from the associated laterally spaced socket members andl to disconnect the front end of said fore and aft extending bar from said vertically movable member.

6. The invention set forth in claim 5, further characterized by the tractor drawbar having side members and said socket sections lbeing spaced apart so as to engage the inner faces of said side members for limiting the lateral displacement of said transverse bar and lister bottoms relative to the tractor.

'7. An implement adapted to be mounted on a tractor having a rear vertically swingable drawbar bail and a forwardly disposed bar-receiving member swingably mounted on the tractor for generally' vertical movement and interconnected with said bail, said implement comprising frame means including a generally forwardly extending bar adapted to be removably seated in said vertically movable tractor-carried member and a transverse bar rigidly xed to the rear end of said forwardly extending bar, tool means connected to said transverse bar and extending at opposite sides of said bar, and means for detachably connecting said transverse bar with the rear tractor drawbar including a pair of laterally spaced sockets connected with said transverse bar and open at one side so as to receive the transverse portion of said rear tractor drawbar, said implement being detached from the tractor by detaching said transverse bar and moving the tractor longitudinally away from the implement so as `to disengage the transverse .portion of said swingable bail from the associated laterally spaced socket members and to disconnect the front end of said fore and aft extending bar from said vertically movable member.

8. An implement adapted to be connected with a tractor having a vertically swingable, generally U-shaped bail member, said implement being adapted to be connected to the bail member of said tractor and including a pair of fore and 'aft extending hook portions, each having vertically spaced sections joined at their forward ends and spaced apart at their rear ends, with the lower section connected with said implement so that said tractor may be backed into the implement and the rear portion of said bail member lowered into a position rearwardly of the open ends of said hook portions, into substantial Contact with the lower sections thereof, and then driven forwardly to engage the tractor bail in said hook portions.

WALTER H. SILVER.

WTILLIAM V. LOHRMAN.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,200,107 Heylman Oct. 3, 1916 1,817,085 Lindgren et al. Aug. 4, 1931 Number Number Name Date Mott Aug. 11, 1942 Ego May 18, 1943 Benjamin et al. May 25, 1943 Strandlund Jan. 11, 1944 Orelind June 27, 1944 Ray Sept. 12, 1944 Martin Jan. 14, 1947 Miller Feb. 18, 1947 FOREIGN PATENTS Country Date Great Britain Feb. 14, 1921 Great Britain Dec. 14, 1922 

